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Dimethicone - Uses: Used as defoamer in chemical, pharmaceutical and food industries; used as hair oil, hair cream, hairdressing agent, hair fixer and sunscreen in cosmetic industry; used as high-efficiency in plastic and rubber molding processing Release agent; used as a polishing agent for automobiles, furniture, floors and leather; used as a high temperature dielectric liquid in the electrical and electronic industries
.
Glass, ceramics, metals, textiles, cement products, etc.
treated by this product are not only water-repellent, but also anti-corrosion, anti-mildew, smooth surface and smooth to the touch
.
It can also be used as a high and low temperature lubricant between various materials, as a lubricant for plastic manufacturing, and as a shock-proof damping material for precision machinery and instruments
.
Simethicone-Identification Take 0.
5g of this product, add 0.
5ml of sulfuric acid and 0.
5ml of nitric acid, and slowly ignite to form a white fibrous substance, and finally leave a white residue
.
Get 0.
5 g of this product, put it in a test tube, heat with low heat until white smoke appears.
Invert the test tube on another test tube containing 0.
1% sodium chromate sulfuric acid solution 1 ml to make the white smoke contact the solution
.
The second tube was shaken for 10 seconds, heated in a water bath for 5 minutes, and the solution turned purple
.
The infrared light absorption spectrum of this product should be consistent with the control spectrum (spectrum set 10)
.
Simethicone - check the pH and take 5ml of ethanol and each, shake well, add 1 drop of phenolphthalein indicator solution, dropwise add sodium hydroxide titration solution (0.
02mol/L) to microscopic pink, add 10 g of this product, shake If it is colorless, add 0.
15ml of sodium hydroxide titration solution (0.
02mol/L), it should be pink; if it is pink, add 0-15ml of sulfuric acid titration solution (0.
01mol:/L), the pink should be disappear
.
Take this product from mineral oil, compare the fluorescence intensity with the control solution (take quinine sulfate, dissolve and dilute with 0.
005mol/L sulfuric acid to make a solution containing 0.
1# in every 1 l) under an ultraviolet lamp (365mn), no deeper
.
Take 5.
0g of this product from the phenyl compound, put it in a test tube with a stopper, add 10ml of cyclohexane precisely, shake to dissolve, and measure the absorbance in the wavelength range of 250～270mn according to UV-visible spectrophotometry (general rule 0401).
Should not exceed 0.
2
.
Take this product for loss on drying, and dry it at 150aC for 2 hours.
The weight loss shall not exceed the limit specified in the attached table (General Rule 0831)
.
The heavy metal takes 0.
5 ml of the mixed solution of 1.
0 g test solution of this product-0.
2% hydroxylamine hydrochloride solution (1: 9) as a control solution
.
Immediately and vigorously shake the test solution and the control solution for 1 minute, the red color produced by the test solution should not be deeper (0.
0005%) than the control solution
.
Arsenic salt takes 10 g of this product, adds 1.
0 g of calcium hydroxide, mixes, adds a small amount of water, stirs evenly, after drying, first burns with a small fire to make carbonization, then burns at 500～600 ° C to make complete ashing, Let cool, add 5ml of hydrochloric acid and 23ml of water to dissolve, check according to the law (the first method of general rule 0 8 2 2), it should meet the regulations (0.
0002%).
At 4000~zoocnr1 wavenumber block the infrared spectrum of the sample and the reference substance, calculate the absorbance (in terms of peak height) near the 1259cm-1 wavenumber, and calculate the content of polydimethylsiloxane in dimethicone according to the following formula : content of polydimethylsiloxane (%) = 100 (AJ/AS) (DS/DU) where A u is the absorbance of the sample; A s is the absorbance of the reference substance; it is considered that the sample is at 25°C The relative density at 25°C; the relative density of the control substance at 25°C
.
Simethicone - category of pharmaceutical excipients, antifoams and lubricants,
etc.
Simethicone - Store tightly sealed
.
Simethicone - the limit value of loss on drying indicated in the attached table Viscosity (mm2/s) Viscosity (mttiVfO Relative Density Refractive Index Loss on Drying (%) 20 18 ~ 22 0.
946 ~ 0.
954 1 .
3980 ~ 1 .
4020 20.
050 47.
5 ~52.
5 0.
955~0.
965 1.
4005~1,4045 2.
0100 95~105 0.
962~0.
970 1.
4005~4045 0.
3200 190~220 0.
964~0.
972 1.
4013~L 4053 0.
3350 332.
5~367.
5 0.
965~0.
973 1.
4013~1.
4053 0.
3500 475~525 0.
967~0.
975 1.
4013~1.
4053 0.
3750 712.
5~0.
787.
5 0.
975~ 4013~1.
4053 0.
31000 950~1050 0.
967~0.
975 1.
4013~1.
4053 0.
312500 11875~13125 1.
4015~1.
4055 2.
030000 27000~33000 4100 2.
0
.
Glass, ceramics, metals, textiles, cement products, etc.
treated by this product are not only water-repellent, but also anti-corrosion, anti-mildew, smooth surface and smooth to the touch
.
It can also be used as a high and low temperature lubricant between various materials, as a lubricant for plastic manufacturing, and as a shock-proof damping material for precision machinery and instruments
.
Simethicone-Identification Take 0.
5g of this product, add 0.
5ml of sulfuric acid and 0.
5ml of nitric acid, and slowly ignite to form a white fibrous substance, and finally leave a white residue
.
Get 0.
5 g of this product, put it in a test tube, heat with low heat until white smoke appears.
Invert the test tube on another test tube containing 0.
1% sodium chromate sulfuric acid solution 1 ml to make the white smoke contact the solution
.
The second tube was shaken for 10 seconds, heated in a water bath for 5 minutes, and the solution turned purple
.
The infrared light absorption spectrum of this product should be consistent with the control spectrum (spectrum set 10)
.
Simethicone - check the pH and take 5ml of ethanol and each, shake well, add 1 drop of phenolphthalein indicator solution, dropwise add sodium hydroxide titration solution (0.
02mol/L) to microscopic pink, add 10 g of this product, shake If it is colorless, add 0.
15ml of sodium hydroxide titration solution (0.
02mol/L), it should be pink; if it is pink, add 0-15ml of sulfuric acid titration solution (0.
01mol:/L), the pink should be disappear
.
Take this product from mineral oil, compare the fluorescence intensity with the control solution (take quinine sulfate, dissolve and dilute with 0.
005mol/L sulfuric acid to make a solution containing 0.
1# in every 1 l) under an ultraviolet lamp (365mn), no deeper
.
Take 5.
0g of this product from the phenyl compound, put it in a test tube with a stopper, add 10ml of cyclohexane precisely, shake to dissolve, and measure the absorbance in the wavelength range of 250～270mn according to UV-visible spectrophotometry (general rule 0401).
Should not exceed 0.
2
.
Take this product for loss on drying, and dry it at 150aC for 2 hours.
The weight loss shall not exceed the limit specified in the attached table (General Rule 0831)
.
The heavy metal takes 0.
5 ml of the mixed solution of 1.
0 g test solution of this product-0.
2% hydroxylamine hydrochloride solution (1: 9) as a control solution
.
Immediately and vigorously shake the test solution and the control solution for 1 minute, the red color produced by the test solution should not be deeper (0.
0005%) than the control solution
.
Arsenic salt takes 10 g of this product, adds 1.
0 g of calcium hydroxide, mixes, adds a small amount of water, stirs evenly, after drying, first burns with a small fire to make carbonization, then burns at 500～600 ° C to make complete ashing, Let cool, add 5ml of hydrochloric acid and 23ml of water to dissolve, check according to the law (the first method of general rule 0 8 2 2), it should meet the regulations (0.
0002%).
At 4000~zoocnr1 wavenumber block the infrared spectrum of the sample and the reference substance, calculate the absorbance (in terms of peak height) near the 1259cm-1 wavenumber, and calculate the content of polydimethylsiloxane in dimethicone according to the following formula : content of polydimethylsiloxane (%) = 100 (AJ/AS) (DS/DU) where A u is the absorbance of the sample; A s is the absorbance of the reference substance; it is considered that the sample is at 25°C The relative density at 25°C; the relative density of the control substance at 25°C
.
Simethicone - category of pharmaceutical excipients, antifoams and lubricants,
etc.
Simethicone - Store tightly sealed
.
Simethicone - the limit value of loss on drying indicated in the attached table Viscosity (mm2/s) Viscosity (mttiVfO Relative Density Refractive Index Loss on Drying (%) 20 18 ~ 22 0.
946 ~ 0.
954 1 .
3980 ~ 1 .
4020 20.
050 47.
5 ~52.
5 0.
955~0.
965 1.
4005~1,4045 2.
0100 95~105 0.
962~0.
970 1.
4005~4045 0.
3200 190~220 0.
964~0.
972 1.
4013~L 4053 0.
3350 332.
5~367.
5 0.
965~0.
973 1.
4013~1.
4053 0.
3500 475~525 0.
967~0.
975 1.
4013~1.
4053 0.
3750 712.
5~0.
787.
5 0.
975~ 4013~1.
4053 0.
31000 950~1050 0.
967~0.
975 1.
4013~1.
4053 0.
312500 11875~13125 1.
4015~1.
4055 2.
030000 27000~33000 4100 2.
0
